The point is that she is referring to the "lights" on the phone being out because there are no incoming calls. Not the power.
You don't know what she's referring to -- you're making an assumption. All she said was "the lights all went out".
If you believe this alleged power outage has nothing to do with a conspiracy and is just some type of coincidence, then you are at odds with your fellow nuts who clearly are claiming this proves a conspiracy. That is the entire point of the OP.
No, that's another Richard Smith strawman. The OP just asked if there was a power cut or not. You're the one injecting yourself into the conversation with your usual irrelevant rants about fantasy conspirators.
Baker and Truly took the elevator just a couple of minutes after the assassination. The power is on to the Hertz sign at 12:30. There are films of the lights on in the TSBD. The power outage is simply a CTer fantasy. It didn't happen.
So your contention is that a power cut had to effect the entire building and to have happened prior to 12:30 for it to have happened at all? Have you heard of these things called electrical circuits?